Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST2000XM
Filters: SBIG LRGB
Exposure times: L: 20x3min R: 6x3min G: 6x3min B: 6x3min
Exposure time total: 1h 24min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2011-02-05
Object data of M 41
Object type: Open star cluster (II 3 m)
Size: 38′
Magnitude: 4.5 mag
Constellation: Canis Major
Distance: 2300 Ly
